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Browsing by Author "Stefánsson, Kári"

Browsing by Author "Stefánsson, Kári"

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    Effect of booster vaccination against Delta and Omicron SARS-CoV-2 variants in Iceland 
    Norddahl, Gudmundur L.; Melsted, Páll; Gunnarsdottir, Kristbjorg; Halldórsson, Gísli Hreinn; Olafsdottir, Thorunn; Gylfason, Arnaldur; Kristjánsson, Már; Magnusson, Olafur T.; sulem, patrick; Gudbjartsson, Daniel Fannar; Þorsteinsdóttir, Unnur; Jónsdóttir, Ingileif; Stefánsson, Kári (2022-09-28)
    By the end of July 2021, the majority of the Icelandic population had received vaccination against COVID-19. In mid-July a wave of SARS-CoV-2 infections, dominated by the Delta variant, spread through the population, followed by an Omicron wave in ...
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    Eleven genomic loci affect plasma levels of chronic inflammation marker soluble urokinase-type plasminogen activator receptor 
    Dowsett, Joseph; Ferkingstad, Egil; Rasmussen, Line Jee Hartmann; Thørner, Lise Wegner; Magnússon, Magnús Karl; Sugden, Karen; Þorleifsson, Guðmar; Frigge, Mike; Burgdorf, Kristoffer Sølvsten; Ostrowski, Sisse Rye; Sørensen, Erik; Erikstrup, Christian; Pedersen, Ole Birger; Hansen, Thomas Folkmann; Banasik, Karina; Brunak, Søren; Tragante, Vinicius; Lund, Sigrún Helga; Stefánsdóttir, Lilja; Gunnarson, Bjarni; Poulton, Richie; Arseneault, Louise; Caspi, Avshalom; Moffitt, Terrie E.; Gudbjartsson, Daníel Fannar; Eugen-Olsen, Jesper; Stefánsson, Hreinn; Stefánsson, Kári; Ullum, Henrik (2021-06-02)
    Soluble urokinase-type plasminogen activator receptor (suPAR) is a chronic inflammation marker associated with the development of a range of diseases, including cancer and cardiovascular disease. The genetics of suPAR remain unexplored but may shed ...
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    Genetic architecture of band neutrophil fraction in Iceland 
    Oskarsson, Gudjon R.; Magnússon, Magnús Karl; Oddson, Ásmundur; Jensson, Brynjar O; Friðriksdóttir, Rún; Arnadottir, Gudny A; Katrinardottir, Hildigunnur; Rögnvaldsson, Sölvi; Halldórsson, Gísli Hreinn; Sveinbjörnsson, Gardar; Ivarsdottir, Erna V.; Stefánsdóttir, Lilja; Ferkingstad, Egil; Norland, Kristjan; Tragante, Vinicius; Sæmundsdóttir, Jóna; Jónasdóttir, Áslaug; Jonasdottir, Adalbjorg; Sigurjonsdottir, Svanhvit; Petursdottir, Karen O.; Davidsson, Olafur B; Rafnar, Thorunn; Hólm, Hilma; Ólafsson, Ísleifur; Önundarson, Páll Torfi; Viðarsson, Brynjar; Sigurdardottir, Olof G.; Másson, Gísli; Gudbjartsson, Daniel Fannar; Jónsdóttir, Ingileif; Norddahl, Gudmundur L.; Þorsteinsdóttir, Unnur; Sulem, Patrick; Stefánsson, Kári (2022-06-01)
    The characteristic lobulated nuclear morphology of granulocytes is partially determined by composition of nuclear envelope proteins. Abnormal nuclear morphology is primarily observed as an increased number of hypolobulated immature neutrophils, called ...
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    The genetic structure of Norway 
    Mattingsdal, Morten; Ebenesersdóttir, Sigríður Sunna; Moore, Kristjan Helgi Swerford; Andreassen, Ole A.; Hansen, Thomas Folkmann; Werge, Thomas M.; Kockum, Ingrid; Olsson, Tomas; Alfredsson, Lars; Helgason, Agnar Sturla; Stefánsson, Kári; Hovig, Eivind (2021-11)
    The aim of the present study was to describe the genetic structure of the Norwegian population using genotypes from 6369 unrelated individuals with detailed information about places of residence. Using standard single marker- and haplotype-based ...
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    Genetics and epidemiology of mutational barcode-defined clonal hematopoiesis 
    Stacey, Simon N.; Zink, Florian; Halldórsson, Gísli Hreinn; Stefánsdóttir, Lilja; Guðjónsson, Sigurjón Axel; Einarsson, Gudmundur; Hjörleifsson, Grimur; Eiríksdóttir, Þjóðbjörg; Helgadottir, Anna; Björnsdottir, Gyda; Thorgeirsson, Thorgeir E.; Ólafsdóttir, Þórunn Ásta; Jónsdóttir, Ingileif; Gretarsdottir, Solveig; Tragante, Vinicius; Magnússon, Magnús Karl; Jonsson, Hakon; Gudmundsson, Julius; Olafsson, Sigurgeir; Holm, Hilma; Gudbjartsson, Daniel F.; Sulem, Patrick; Helgason, Agnar Sturla; Þorsteinsdóttir, Unnur; Tryggvadottir, Laufey; Rafnar, Thorunn; Melsted, Páll; Úlfarsson, Magnús Örn; Viðarsson, Brynjar; Thorleifsson, Gudmar; Stefánsson, Kári (2023-11-06)
    Clonal hematopoiesis (CH) arises when a substantial proportion of mature blood cells is derived from a single hematopoietic stem cell lineage. Using whole-genome sequencing of 45,510 Icelandic and 130,709 UK Biobank participants combined with a mutational ...
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    Histopathology and levels of proteins in plasma associate with survival after colorectal cancer diagnosis 
    Magnússon, Magnús Ingvi; Agnarsson, Bjarni Agnar; Jónasson, Jón Gunnlaugur; Tryggvason, Þórður; Aeffner, Famke; le Roux, Louise; Magnusdottir, Droplaug N.; Gunnarsdóttir, Helga Sigrún; Alexíusdóttir, Kristín K.; Gunnarsdottir, Kristbjorg; Söebech, Emilia; Runarsdottir, Hjaltey; Jónsdóttir, Erna María; Kristinsdóttir, Bjarney Sif; Olafsson, Sigurgeir; Knutsdottir, Hildur; Þorsteinsdóttir, Unnur; Úlfarsson, Magnús Örn; Guðbjartsson, Daníel Fannar; Saemundsdottir, Jona; Magnusson, Olafur T.; Norddahl, Gudmundur L.; Watson, J. E.Vivienne; Rafnar, Thorunn; Lund, Sigrún Helga; Stefánsson, Kári (2023-10-19)
    Background: The TNM system is used to assess prognosis after colorectal cancer (CRC) diagnosis. Other prognostic factors reported include histopathological assessments of the tumour, tumour mutations and proteins in the blood. As some of these factors ...
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    Meta-analysis of erosive hand osteoarthritis identifies four common variants that associate with relatively large effect 
    Styrkársdóttir, Unnur; Stefánsdóttir, Lilja; Thorleifsson, Gudmar; Andri Stefánsson, Ólafur; Sævarsdóttir, Sædís; Lund, Sigrún Helga; Rafnar, Thorunn; Hoshijima, Kazuyuki; Novak, Kendra; Oreiro, Natividad; Rego-Perez, Ignacio; Hansen, Channing; Kazmers, Nikolas; Kiemeney, Lambertus A; Blanco, Francisco J; Barker, Tyler; Kloppenburg, Margreet; Jurynec, Michael J; Gudbjartsson, Daniel F; Jónsson, Helgi; Þorsteinsdóttir, Unnur; Stefánsson, Kári (2023-06)
    OBJECTIVES: Erosive hand osteoarthritis (EHOA) is a severe subset of hand osteoarthritis (OA). It is unclear if EHOA is genetically different from other forms of OA. Sequence variants at ten loci have been associated with hand OA but none with EHOA. ...
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    Multiomics analysis of rheumatoid arthritis yields sequence variants that have large effects on risk of the seropositive subset 
    Sævarsdóttir, Sædís; Stefansdottir, Lilja; Sulem, P.; Thorleifsson, G.; Ferkingstad, E.; Rutsdottir, G.; Glintborg, B.; Westerlind, H.; Gröndal, Gerður María; Loft, I.C.; Sorensen, S.B.; Lie, B.A.; Brink, M.; Arlestig, L.; Arnthorsson, A.O.; Baecklund, E.; Banasik, K.; Bank, S.; Bjorkman, L.I.; Ellingsen, T.; Erikstrup, C.; Frei, O.; Gjertsson, I.; Gudbjartsson, D.F.; Gudjonsson, S.A.; Halldorsson, G.H.; Hendricks, O.; Hillert, J.; Hogdall, E.; Jacobsen, Sø; Jensen, D.V.; Jonsson, Helgi; Kastbom, A.; Kockum, I.; Kristensen, S.; Kristjansdottir, Helga; Larsen, M.H.; Linauskas, A.; Hauge, E.-M.; Loft, A.G.; Lúðvíksson, Björn Rúnar; Lund, S.H.; Markusson, Þorsteinn; Masson, G.; Melsted, P.; Moore, K.H.S.; Munk, H.; Nielsen, K.R.; Norddahl, G.L.; Oddsson, A.; Olafsdottir, T.A.; Olason, P.I.; Olsson, T.; Ostrowski, S.R.; Hørslev-Petersen, K.; Rognvaldsson, S.; Sanner, H.; Silberberg, G.N.; Stefansson, H.; Sørensen, E.; Sørensen, I.J.; Turesson, C.; Bergman, T.; Alfredsson, L.; Kvien, T.K.; Brunak, Sø; Steinsson, K.; Andersen, V.; Andreassen, O.A.; Rantapää-Dahlqvist, S.; Hetland, M.L.; Klareskog, L.; Askling, J.; Padyukov, L.; Pedersen, O.B.V.; Thorsteinsdottir, U.; Jonsdottir, I.; Stefánsson, Kári (2022-04-25)
    Objectives To find causal genes for rheumatoid arthritis (RA) and its seropositive (RF and/or ACPA positive) and seronegative subsets. Methods We performed a genome-wide association study (GWAS) of 31 313 RA cases (68% seropositive) and ∼1 million ...
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    Population-level deficit of homozygosity unveils CPSF3 as an intellectual disability syndrome gene 
    Árnadóttir, Guðný Anna; Oddsson, Asmundur; Jensson, Brynjar O.; Gisladottir, Svanborg; Simon, Mariella T.; Arnthorsson, Asgeir O.; Katrinardottir, Hildigunnur; Fridriksdottir, Run; Ivarsdottir, Erna V.; Jonasdottir, Adalbjorg; Jonasdottir, Aslaug; Barrick, Rebekah; Saemundsdottir, Jona; le Roux, Louise; Oskarsson, Gudjon R.; Ásmundsson, Jurate; Steffensen, Þóra Steinunn; Gudmundsson, Kjartan R.; Ludvigsson, Petur; Jonsson, Jon J.; Masson, Gisli; Jonsdottir, Ingileif; Holm, Hilma; Jonasson, Jon G.; Magnusson, Olafur Th; Thorarensen, Olafur; Abdenur, Jose; Norddahl, Gudmundur L.; Gudbjartsson, Daniel F.; Bjornsson, Hans T.; Þorsteinsdóttir, Unnur; Sulem, Patrick; Stefánsson, Kári (2022-02-04)
    Predicting the pathogenicity of biallelic missense variants can be challenging. Here, we use a deficit of observed homozygous carriers of missense variants, versus an expected number in a set of 153,054 chip-genotyped Icelanders, to identify potentially ...
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    Rare variants with large effects provide functional insights into the pathology of migraine subtypes, with and without aura 
    Bjornsdottir, Gyda; Chalmer, Mona A.; Stefánsdóttir, Lilja; Skuladottir, Astros Th; Einarsson, Gudmundur; Andrésdóttir, Margrét; Beyter, Doruk; Ferkingstad, Egil; Gretarsdottir, Solveig; Halldórsson, Bjarni Vilhjálmur; Halldórsson, Gísli Hreinn; Helgadottir, Anna; Helgason, Hannes; Hjorleifsson Eldjarn, Grimur; Jonasdottir, Adalbjorg; Jonasdottir, Aslaug; Jónsdóttir, Ingileif; Knowlton, Kirk U.; Nadauld, Lincoln D.; Lund, Sigrún Helga; Magnusson, Olafur Th; Melsted, Páll; Moore, Kristjan H.S.; Oddsson, Asmundur; Olason, Pall I.; Sigurdsson, Asgeir; Stefansson, Olafur A.; Saemundsdottir, Jona; Sveinbjornsson, Gardar; Tragante, Vinicius; Unnsteinsdottir, Unnur; Walters, Guðmundur Bragi; Zink, Florian; Rødevand, Linn; Andreassen, Ole A.; Igland, Jannicke; Lie, Rolv T.; Haavik, Jan; Banasik, Karina; Brunak, Søren; Didriksen, Maria; T. Bruun, Mie; Erikstrup, Christian; Kogelman, Lisette J.A.; Nielsen, Kaspar R.; Sørensen, Erik; Pedersen, Ole B.; Ullum, Henrik; Bay, Jakob; Boldsen, Jens K.; Brodersen, Thorsten; Burgdorf, Kristoffer; Dinh, Khoa M.; Dowsett, Joseph; Feenstra, Bjarke; Geller, Frank; Hindhede, Lotte; Hjalgrim, Henrik; Jacobsen, Rikke L.; Jemec, Gregor; Kaspersen, Katrine; Kjerulf, Bertram D.; Larsen, Margit A.H.; Louloudis, Ioannis; Lundgaard, Agnete; Mikkelsen, Susan; Mikkelsen, Christina; Nissen, Ioanna; Nyegaard, Mette; Henriksen, Alexander P.; Rohde, Palle D.; Rostgaard, Klaus; Swinn, Michael; Thørner, Lise W.; Bruun, Mie T.; Werge, Thomas; Westergaard, David; Masson, Gisli; Þorsteinsdóttir, Unnur; Olesen, Jes; Ludvigsson, Petur; Thorarensen, Ólafur; Bjornsdottir, Anna; Sigurdardottir, Gudrun R.; Sveinsson, Ólafur Árni; Ostrowski, Sisse R.; Holm, Hilma; Gudbjartsson, Daniel F.; Thorleifsson, Gudmar; Sulem, Patrick; Stefansson, Hreinn; Thorgeirsson, Thorgeir E.; Hansen, Thomas F.; Stefánsson, Kári (2023-11)
    Migraine is a complex neurovascular disease with a range of severity and symptoms, yet mostly studied as one phenotype in genome-wide association studies (GWAS). Here we combine large GWAS datasets from six European populations to study the main migraine ...
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    Screening for Rare Coding Variants That Associate With the QTc Interval in Iceland 
    Sveinbjornsson, Gardar; Benediktsdóttir, Bára Dís; Sigfússon, Gunnlaugur; Norland, Kristjan; Davidsson, Olafur B.; Thorolfsdottir, Rosa B.; Tragante, Vinicius; Arnadottir, Gudny A.; Jensson, Brynjar O.; Katrinardottir, Hildigunnur; Fridriksdottir, Run; Gudmundsdottir, Hallbera; Ægisdóttir, Hildur Margrét; Fridriksson, Brynjar; Thorgeirsson, Gudmundur; Magnússon, Viðar; Oddsson, Asmundur; Sulem, Patrick; Gudbjartsson, Daniel F.; Holm, Hilma; Arnar, Davíð Ottó; Stefánsson, Kári (2023-07-18)
    Background Long-QT syndrome (LQTS) is a cardiac repolarization abnormality that can lead to sudden cardiac death. The most common causes are rare coding variants in the genes KCNQ1, KCNH2, and SCN5A. The data on LQTS epidemiology are limited, and ...
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    Using multivariable Mendelian randomization to estimate the causal effect of bone mineral density on osteoarthritis risk, independently of body mass index 
    Hartley, April; Sanderson, Eleanor; Granell, Raquel; Paternoster, Lavinia; Zheng, Jie; Smith, George Davey; Southam, Lorraine; Hatzikotoulas, Konstantinos; Boer, Cindy G.; Van Meurs, Joyce; Zeggini, Eleftheria; Gregson, Celia L.; Tobias, Jon H.; Stefánsdóttir, Lilja; Zhang, Yanfei; De Almeida, Rodrigo Coutinho; Wu, Tian T.; Teder-Laving, Maris; Skogholt, Anne Heidi; Terao, Chikashi; Zengini, Eleni; Alexiadis, George; Barysenka, Andrei; Bjornsdottir, Gyda; Gabrielsen, Maiken E.; Gilly, Arthur; Ingvarsson, Þorvaldur; Johnsen, Marianne B.; Jónsson, Helgi; Kloppenburg, Margreet G.; Luetge, Almut; Mägi, Reedik; Mangino, Massimo; Nelissen, Rob R.G.H.H.; Shivakumar, Manu; Steinberg, Julia; Takuwa, Hiroshi; Thomas, Laurent; Tuerlings, Margo; Babis, George; Cheung, Jason Pui Yin; Samartzis, Dino; Lietman, Steve A.; Slagboom, P. Eline; Stefánsson, Kári; Uitterlinden, André G.; Winsvold, Bendik; Zwart, John Anker; Sham, Pak Chung; Thorleifsson, Gudmar; Gaunt, Tom R.; Morris, Andrew P.; Valdes, Ana M.; Tsezou, Aspasia; Cheah, Kathryn S.E.; Ikegawa, Shiro; Hveem, Kristian; Esko, Tõnu; Wilkinson, J. Mark; Meulenbelt, Ingrid; Michael Lee, Ming Ta; Styrkársdóttir, Unnur (2022-08-01)
    Objectives: Observational analyses suggest that high bone mineral density (BMD) is a risk factor for osteoarthritis (OA); it is unclear whether this represents a causal effect or shared aetiology and whether these relationships are body mass index ...